Aggregate Technician

Piles of aggregate


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This is a three-day classroom and laboratory course that takes place over two half-days and two full days. The emphasis will be on developing an understanding of the ALDOT Procedure for the Acceptance of Fine and Coarse Aggregates (ALDOT Procedure 249). The test procedures for acceptance of aggregates will be demonstrated, and there will be an opportunity for the students to get hands-on training with the procedures. The following test procedures will be covered: sampling aggregates, materials finer than 200 sieve, unit weight and voids in aggregate, sieve analysis in fine and coarse aggregates, reducing field samples of aggregate to testing size, methods of sampling from a conveyor belt and for sampling and testing of Riprap Stone, drying of soil and aggregate samples for field testing, and method for determining flat and elongated pieces in coarse aggregate.

Fees, Refunds & Deadline

Registration fee: $600/student
Written retake fee: $150/student

Costs for housing, food and transportation are the responsibility of each participant. Registration fees must be paid at time of registration. Registration closes 2 weeks prior to start date of course or when class is full, whichever comes first. Cancellations received at least 2 weeks prior to the course start date will result in a full refund. No refunds will be provided for course cancellations after that date; however, substitutions will be accepted.

To obtain more information on this course, please call or write:

Vinnie Gammons
National Center for Asphalt Technology
277 Technology Parkway
Auburn, AL 36830, USA
Phone: (334) 844-6228
Fax: (334) 844-6248